I'm out of school now, but here's some things we did in mine:
~Participated at local "fairs" doing a project either for extra credit or as part of a class, or just for the experience. IE-Local HS fair we did an AIDS poster and gave out pamphlets we made. Blood pressure screenings at a drug store with a poster and slides about heart problems. Nurse recruitment at career fairs. etc
~Comissioned the Mammogram Van to visit campus once every few months for students, faculty and general community. Participated in getting health histories, pt education, breast cancer facts.
~Fund raising--selling sweat shirts, lanyards, etc with school logo. Used this for bi monthly luncheons (pizza and a salad, etc...good time to get together and plan stuff, gripe, make study groups, etc)
~We'd have a recruiter from a diff local hospital come once every 2 weeks or so. She'd bring us food and drinks, little give aways, and LOTS of info about that hospital (benefits, pay, tuition reimbursement, experience req'd, ratios, hours, etc). These were really great, and hospitals were more than happy to oblige!
~Adopt a family or charity. No, not just around the holidays. Year round. People ALWAYS need food and clothing.
~Participated as a group in various "walks" (Walk for the cure, walk for autism, that kind of thing)
~Sponsor a campus wide blood drive.
~Nursing career fairs (we'd get about 40-60 diff recruiters, they did on spot interviews, giveaways, and lots of info) twice a year.
Also, we made it policy that EVERYONE who was a nursing major was automatically a part of the group. There was no application, no fees or dues, not mandatory meetings, etc. Made it very flexible as a lot of our students already had families, jobs, etc.
Best of luck! It can be a very enriching experience.